flewkey/cuberite-2a
1
0
Fork 0
Code Releases Activity
cc54f4f836
cuberite-2a/source/Protocol/ProtocolRecognizer.cpp
madmaxoft 88472b7ce6 Removed the obsolete SendWholeInventory(cInventory &) function. 
This won't compile because there's still a change in Protocol17x.cpp pending; the next commit will fix this.
2013-11-05 18:37:57 +01:00

905 lines
18 KiB
C++
Raw Blame History

// ProtocolRecognizer.cpp
// Implements the cProtocolRecognizer class representing the meta-protocol that recognizes possibly multiple
// protocol versions and redirects everything to them
#include "Globals.h"
#include "ProtocolRecognizer.h"
#include "Protocol125.h"
#include "Protocol132.h"
#include "Protocol14x.h"
#include "Protocol15x.h"
#include "Protocol16x.h"
#include "Protocol17x.h"
#include "../ClientHandle.h"
#include "../Root.h"
#include "../Server.h"
#include "../World.h"
#include "../ChatColor.h"
cProtocolRecognizer::cProtocolRecognizer(cClientHandle * a_Client) :
super(a_Client),
m_Protocol(NULL),
m_Buffer(512)
{
}
cProtocolRecognizer::~cProtocolRecognizer()
{
delete m_Protocol;
}
AString cProtocolRecognizer::GetVersionTextFromInt(int a_ProtocolVersion)
{
switch (a_ProtocolVersion)
{
case PROTO_VERSION_1_2_5: return "1.2.5";
case PROTO_VERSION_1_3_2: return "1.3.2";
case PROTO_VERSION_1_4_2: return "1.4.2";
case PROTO_VERSION_1_4_4: return "1.4.4";
case PROTO_VERSION_1_4_6: return "1.4.6";
case PROTO_VERSION_1_5_0: return "1.5";
case PROTO_VERSION_1_5_2: return "1.5.2";
case PROTO_VERSION_1_6_1: return "1.6.1";
case PROTO_VERSION_1_6_2: return "1.6.2";
case PROTO_VERSION_1_6_3: return "1.6.3";
case PROTO_VERSION_1_6_4: return "1.6.4";
}
ASSERT(!"Unknown protocol version");
return Printf("Unknown protocol (%d)", a_ProtocolVersion);
}
void cProtocolRecognizer::DataReceived(const char * a_Data, int a_Size)
{
if (m_Protocol == NULL)
{
if (!m_Buffer.Write(a_Data, a_Size))
{
m_Client->Kick("Unsupported protocol version");
return;
}
if (!TryRecognizeProtocol())
{
return;
}
// The protocol has just been recognized, dump the whole m_Buffer contents into it for parsing:
AString Dump;
m_Buffer.ResetRead();
m_Buffer.ReadAll(Dump);
m_Protocol->DataReceived(Dump.data(), Dump.size());
}
else
{
m_Protocol->DataReceived(a_Data, a_Size);
}
}
void cProtocolRecognizer::SendAttachEntity(const cEntity & a_Entity, const cEntity * a_Vehicle)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendAttachEntity(a_Entity, a_Vehicle);
}
void cProtocolRecognizer::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2, BLOCKTYPE a_BlockType)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendBlockAction(a_BlockX, a_BlockY, a_BlockZ, a_Byte1, a_Byte2, a_BlockType);
}
void cProtocolRecognizer::SendBlockBreakAnim(int a_entityID, int a_BlockX, int a_BlockY, int a_BlockZ, char stage)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendBlockBreakAnim(a_entityID, a_BlockX, a_BlockY, a_BlockZ, stage);
}
void cProtocolRecognizer::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendBlockChange(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta);
}
void cProtocolRecognizer::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendBlockChanges(a_ChunkX, a_ChunkZ, a_Changes);
}
void cProtocolRecognizer::SendChat(const AString & a_Message)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendChat(a_Message);
}
void cProtocolRecognizer::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendChunkData(a_ChunkX, a_ChunkZ, a_Serializer);
}
void cProtocolRecognizer::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendCollectPickup(a_Pickup, a_Player);
}
void cProtocolRecognizer::SendDestroyEntity(const cEntity & a_Entity)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendDestroyEntity(a_Entity);
}
void cProtocolRecognizer::SendDisconnect(const AString & a_Reason)
{
if (m_Protocol != NULL)
{
m_Protocol->SendDisconnect(a_Reason);
}
else
{
// This is used when the client sends a server-ping, respond with the default packet:
WriteByte ((char)0xff); // PACKET_DISCONNECT
WriteString(a_Reason);
}
}
void cProtocolRecognizer::SendEditSign(int a_BlockX, int a_BlockY, int a_BlockZ)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEditSign(a_BlockX, a_BlockY, a_BlockZ);
}
void cProtocolRecognizer::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityEquipment(a_Entity, a_SlotNum, a_Item);
}
void cProtocolRecognizer::SendEntityHeadLook(const cEntity & a_Entity)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityHeadLook(a_Entity);
}
void cProtocolRecognizer::SendEntityLook(const cEntity & a_Entity)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityLook(a_Entity);
}
void cProtocolRecognizer::SendEntityMetadata(const cEntity & a_Entity)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityMetadata(a_Entity);
}
void cProtocolRecognizer::SendEntityProperties(const cEntity & a_Entity)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityProperties(a_Entity);
}
void cProtocolRecognizer::SendEntityRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityRelMove(a_Entity, a_RelX, a_RelY, a_RelZ);
}
void cProtocolRecognizer::SendEntityRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityRelMoveLook(a_Entity, a_RelX, a_RelY, a_RelZ);
}
void cProtocolRecognizer::SendEntityStatus(const cEntity & a_Entity, char a_Status)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityStatus(a_Entity, a_Status);
}
void cProtocolRecognizer::SendEntityVelocity(const cEntity & a_Entity)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendEntityVelocity(a_Entity);
}
void cProtocolRecognizer::SendExplosion(double a_BlockX, double a_BlockY, double a_BlockZ, float a_Radius, const cVector3iArray & a_BlocksAffected, const Vector3d & a_PlayerMotion)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendExplosion(a_BlockX,a_BlockY,a_BlockZ,a_Radius, a_BlocksAffected, a_PlayerMotion);
}
void cProtocolRecognizer::SendGameMode(eGameMode a_GameMode)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendGameMode(a_GameMode);
}
void cProtocolRecognizer::SendHealth(void)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendHealth();
}
void cProtocolRecognizer::SendWindowProperty(const cWindow & a_Window, short a_Property, short a_Value)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendWindowProperty(a_Window, a_Property, a_Value);
}
void cProtocolRecognizer::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendInventorySlot(a_WindowID, a_SlotNum, a_Item);
}
void cProtocolRecognizer::SendKeepAlive(int a_PingID)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendKeepAlive(a_PingID);
}
void cProtocolRecognizer::SendLogin(const cPlayer & a_Player, const cWorld & a_World)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendLogin(a_Player, a_World);
}
void cProtocolRecognizer::SendPickupSpawn(const cPickup & a_Pickup)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPickupSpawn(a_Pickup);
}
void cProtocolRecognizer::SendPlayerAbilities(void)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPlayerAbilities();
}
void cProtocolRecognizer::SendPlayerAnimation(const cPlayer & a_Player, char a_Animation)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPlayerAnimation(a_Player, a_Animation);
}
void cProtocolRecognizer::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPlayerListItem(a_Player, a_IsOnline);
}
void cProtocolRecognizer::SendPlayerMaxSpeed(void)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPlayerMaxSpeed();
}
void cProtocolRecognizer::SendPlayerMoveLook(void)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPlayerMoveLook();
}
void cProtocolRecognizer::SendPlayerPosition(void)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPlayerPosition();
}
void cProtocolRecognizer::SendPlayerSpawn(const cPlayer & a_Player)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendPlayerSpawn(a_Player);
}
void cProtocolRecognizer::SendRespawn(void)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendRespawn();
}
void cProtocolRecognizer::SendSoundEffect(const AString & a_SoundName, int a_SrcX, int a_SrcY, int a_SrcZ, float a_Volume, float a_Pitch)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendSoundEffect(a_SoundName, a_SrcX, a_SrcY, a_SrcZ, a_Volume, a_Pitch);
}
void cProtocolRecognizer::SendSoundParticleEffect(int a_EffectID, int a_SrcX, int a_SrcY, int a_SrcZ, int a_Data)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendSoundParticleEffect(a_EffectID, a_SrcX, a_SrcY, a_SrcZ, a_Data);
}
void cProtocolRecognizer::SendSpawnFallingBlock(const cFallingBlock & a_FallingBlock)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendSpawnFallingBlock(a_FallingBlock);
}
void cProtocolRecognizer::SendSpawnMob(const cMonster & a_Mob)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendSpawnMob(a_Mob);
}
void cProtocolRecognizer::SendSpawnObject(const cEntity & a_Entity, char a_ObjectType, int a_ObjectData, Byte a_Yaw, Byte a_Pitch)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendSpawnObject(a_Entity, a_ObjectType, a_ObjectData, a_Yaw, a_Pitch);
}
void cProtocolRecognizer::SendSpawnVehicle(const cEntity & a_Vehicle, char a_VehicleType, char a_VehicleSubType)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendSpawnVehicle(a_Vehicle, a_VehicleType, a_VehicleSubType);
}
void cProtocolRecognizer::SendTabCompletionResults(const AStringVector & a_Results)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendTabCompletionResults(a_Results);
}
void cProtocolRecognizer::SendTeleportEntity(const cEntity & a_Entity)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendTeleportEntity(a_Entity);
}
void cProtocolRecognizer::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendThunderbolt(a_BlockX, a_BlockY, a_BlockZ);
}
void cProtocolRecognizer::SendTimeUpdate(Int64 a_WorldAge, Int64 a_TimeOfDay)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendTimeUpdate(a_WorldAge, a_TimeOfDay);
}
void cProtocolRecognizer::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendUnloadChunk(a_ChunkX, a_ChunkZ);
}
void cProtocolRecognizer::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendUpdateSign(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4);
}
void cProtocolRecognizer::SendUseBed(const cEntity & a_Entity, int a_BlockX, int a_BlockY, int a_BlockZ )
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendUseBed(a_Entity, a_BlockX, a_BlockY, a_BlockZ);
}
void cProtocolRecognizer::SendWeather(eWeather a_Weather)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendWeather(a_Weather);
}
void cProtocolRecognizer::SendWholeInventory(const cWindow & a_Window)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendWholeInventory(a_Window);
}
void cProtocolRecognizer::SendWindowClose(const cWindow & a_Window)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendWindowClose(a_Window);
}
void cProtocolRecognizer::SendWindowOpen(char a_WindowID, char a_WindowType, const AString & a_WindowTitle, char a_NumSlots)
{
ASSERT(m_Protocol != NULL);
m_Protocol->SendWindowOpen(a_WindowID, a_WindowType, a_WindowTitle, a_NumSlots);
}
AString cProtocolRecognizer::GetAuthServerID(void)
{
ASSERT(m_Protocol != NULL);
return m_Protocol->GetAuthServerID();
}
void cProtocolRecognizer::SendData(const char * a_Data, int a_Size)
{
// This is used only when handling the server ping
m_Client->SendData(a_Data, a_Size);
}
bool cProtocolRecognizer::TryRecognizeProtocol(void)
{
// NOTE: If a new protocol is added or an old one is removed, adjust MCS_CLIENT_VERSIONS and
// MCS_PROTOCOL_VERSIONS macros in the header file, as well as PROTO_VERSION_LATEST macro
// The first packet should be a Handshake, 0x02:
unsigned char PacketType;
if (!m_Buffer.ReadByte(PacketType))
{
return false;
}
switch (PacketType)
{
case 0x02: return TryRecognizeLengthlessProtocol(); // Handshake, continue recognizing
case 0xfe:
{
// This may be either a packet length or the length-less Ping packet
Byte NextByte;
if (!m_Buffer.ReadByte(NextByte))
{
// Not enough data for either protocol
// This could actually happen with the 1.2 / 1.3 client, but their support is fading out anyway
return false;
}
if (NextByte != 0x01)
{
// This is definitely NOT a length-less Ping packet, handle as lengthed protocol:
break;
}
if (!m_Buffer.ReadByte(NextByte))
{
// There is no more data. Although this *could* mean TCP fragmentation, it is highly unlikely
// and rather this is a 1.4 client sending a regular Ping packet (without the following Plugin message)
SendLengthlessServerPing();
return false;
}
if (NextByte == 0xfa)
{
// Definitely a length-less Ping followed by a Plugin message
SendLengthlessServerPing();
return false;
}
// Definitely a lengthed Initial handshake, handle below:
break;
}
} // switch (PacketType)
// This must be a lengthed protocol, try if it has the entire initial handshake packet:
m_Buffer.ResetRead();
UInt32 PacketLen;
UInt32 ReadSoFar = m_Buffer.GetReadableSpace();
if (!m_Buffer.ReadVarInt(PacketLen))
{
// Not enough bytes for the packet length, keep waiting
return false;
}
ReadSoFar -= m_Buffer.GetReadableSpace();
if (!m_Buffer.CanReadBytes(PacketLen))
{
// Not enough bytes for the packet, keep waiting
return false;
}
return TryRecognizeLengthedProtocol(PacketLen - ReadSoFar);
}
bool cProtocolRecognizer::TryRecognizeLengthlessProtocol(void)
{
// The comm started with 0x02, which is a Handshake packet in the length-less protocol family
// 1.3.2 starts with 0x02 0x39 <name-length-short>
// 1.2.5 starts with 0x02 <name-length-short> and name is expected to less than 0x3900 long :)
char ch;
if (!m_Buffer.ReadChar(ch))
{
return false;
}
switch (ch)
{
case PROTO_VERSION_1_3_2:
{
m_Protocol = new cProtocol132(m_Client);
return true;
}
case PROTO_VERSION_1_4_2:
case PROTO_VERSION_1_4_4:
{
m_Protocol = new cProtocol142(m_Client);
return true;
}
case PROTO_VERSION_1_4_6:
{
m_Protocol = new cProtocol146(m_Client);
return true;
}
case PROTO_VERSION_1_5_0:
case PROTO_VERSION_1_5_2:
{
m_Protocol = new cProtocol150(m_Client);
return true;
}
case PROTO_VERSION_1_6_1:
{
m_Protocol = new cProtocol161(m_Client);
return true;
}
case PROTO_VERSION_1_6_2:
case PROTO_VERSION_1_6_3:
case PROTO_VERSION_1_6_4:
{
m_Protocol = new cProtocol162(m_Client);
return true;
}
}
m_Protocol = new cProtocol125(m_Client);
return true;
}
bool cProtocolRecognizer::TryRecognizeLengthedProtocol(UInt32 a_PacketLengthRemaining)
{
UInt32 PacketType;
UInt32 NumBytesRead = m_Buffer.GetReadableSpace();
if (!m_Buffer.ReadVarInt(PacketType))
{
return false;
}
if (PacketType != 0x00)
{
// Not an initial handshake packet, we don't know how to talk to them
LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, initial packet %u)",
m_Client->GetIPString().c_str(), PacketType
);
m_Client->Kick("Unsupported protocol version");
return false;
}
UInt32 ProtocolVersion;
if (!m_Buffer.ReadVarInt(ProtocolVersion))
{
return false;
}
NumBytesRead -= m_Buffer.GetReadableSpace();
switch (ProtocolVersion)
{
case PROTO_VERSION_1_7_2:
{
AString ServerAddress;
short ServerPort;
UInt32 NextState;
m_Buffer.ReadVarUTF8String(ServerAddress);
m_Buffer.ReadBEShort(ServerPort);
m_Buffer.ReadVarInt(NextState);
m_Buffer.CommitRead();
m_Protocol = new cProtocol172(m_Client, ServerAddress, ServerPort, NextState);
return true;
}
}
LOGINFO("Client \"%s\" uses an unsupported protocol (lengthed, version %u)",
m_Client->GetIPString().c_str(), ProtocolVersion
);
m_Client->Kick("Unsupported protocol version");
return false;
}
void cProtocolRecognizer::SendLengthlessServerPing(void)
{
AString Reply;
switch (cRoot::Get()->GetPrimaryServerVersion())
{
case PROTO_VERSION_1_2_5:
case PROTO_VERSION_1_3_2:
{
// http://wiki.vg/wiki/index.php?title=Protocol&oldid=3099#Server_List_Ping_.280xFE.29
Printf(Reply, "%s%s%i%s%i",
cRoot::Get()->GetServer()->GetDescription().c_str(),
cChatColor::Delimiter.c_str(),
cRoot::Get()->GetServer()->GetNumPlayers(),
cChatColor::Delimiter.c_str(),
cRoot::Get()->GetServer()->GetMaxPlayers()
);
break;
}
case PROTO_VERSION_1_4_2:
case PROTO_VERSION_1_4_4:
case PROTO_VERSION_1_4_6:
case PROTO_VERSION_1_5_0:
case PROTO_VERSION_1_5_2:
case PROTO_VERSION_1_6_1:
case PROTO_VERSION_1_6_2:
case PROTO_VERSION_1_6_3:
case PROTO_VERSION_1_6_4:
{
// The server list ping now has 1 more byte of "magic". Mojang just loves to complicate stuff.
// http://wiki.vg/wiki/index.php?title=Protocol&oldid=3101#Server_List_Ping_.280xFE.29
// _X 2012_10_31: I know that this needn't eat the byte, since it still may be in transit.
// Who cares? We're disconnecting anyway.
m_Buffer.ResetRead();
if (m_Buffer.CanReadBytes(2))
{
byte val;
m_Buffer.ReadByte(val); // Packet type - Serverlist ping
m_Buffer.ReadByte(val); // 0x01 magic value
ASSERT(val == 0x01);
}
// http://wiki.vg/wiki/index.php?title=Server_List_Ping&oldid=3100
AString NumPlayers;
Printf(NumPlayers, "%d", cRoot::Get()->GetServer()->GetNumPlayers());
AString MaxPlayers;
Printf(MaxPlayers, "%d", cRoot::Get()->GetServer()->GetMaxPlayers());
AString ProtocolVersionNum;
Printf(ProtocolVersionNum, "%d", cRoot::Get()->GetPrimaryServerVersion());
AString ProtocolVersionTxt(GetVersionTextFromInt(cRoot::Get()->GetPrimaryServerVersion()));
// Cannot use Printf() because of in-string NUL bytes.
Reply = cChatColor::Delimiter;
Reply.append("1");
Reply.push_back(0);
Reply.append(ProtocolVersionNum);
Reply.push_back(0);
Reply.append(ProtocolVersionTxt);
Reply.push_back(0);
Reply.append(cRoot::Get()->GetServer()->GetDescription());
Reply.push_back(0);
Reply.append(NumPlayers);
Reply.push_back(0);
Reply.append(MaxPlayers);
break;
}
} // switch (m_PrimaryServerVersion)
m_Client->Kick(Reply);
}
View Git Blame Copy Permalink